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The US Transportation Collection consists of documents from across all transportation modes with specific focus on research reports from US DOT, state DOTs, and other transportation organizations. Bookmark this collection: https://rosap.ntl.bts.gov/collection_ust or https://doi.org/10.21949/1530857.

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Showing 30321 - 30340 of 35412 results
  • Updating and Maintaining the Rigid Pavement Condition Survey Database for TxDOT
    Updating and Maintaining the Rigid Pavement Condition Survey Database for TxDOT
    Dossey, Terry ;
    McCullough, B. Frank
    1993-07-01 | PDF
    This report represents the results of a study to plan for updating and maintaining the rigid pavement condition survey database for the Texas Department of Transportation (TxDOT). These data will be used to develop performance prediction models for rigid pavements (continuously reinforced concrete, jointed reinforced concrete, and jointed plain con ...
  • Comparing Pavement Responses Under FWD and Truck Loads
    Comparing Pavement Responses Under FWD and Truck Loads
    Akram, Tayyeb ;
    Scullion, Tom
    1993-07-01 | PDF
    This report discusses the analyses of deflection data collected on thick and thin asphaltic concrete pavement sections instrumented with Multi-depth Deflectometers (MDD's). Surface and depth deflection data were collected under both FWD and truck loadings. Linear elastic analysis was performed to compare layer moduli back calculation from FWD surfa ...
  • Automated Incident Management Plan Using Geographic Information Systems Technology for Traffic Management Centers
    Automated Incident Management Plan Using Geographic Information Systems Technology for Traffic Management Centers
    Siegfried, Robert H. ;
    Vaidya, Nitin
    1993-07-01 | PDF
    This study addresses the need to incorporate automated incident management in a traffic management center to respond to accidents, disabled vehicles, and other capacity-reducing incidents. The strategy examined to address this need involved developing an automated incident management plan, by customizing personal computer (PC) software and special ...
  • Spacing and cover of epoxy coated prestressing strands final report
    Spacing and cover of epoxy coated prestressing strands : final report.
    Gopu, Vijaya ;
    Cousins, Thomas E.
    1993-07-01 | PDF
    this report summarizes a two year research effort related to spacing and concrete over requirements for epoxy coated prestressing strand. Today, prestressed concrete is widely used in the construction industry. Prestressed members are generally smaller than their reinforced concrete counterparts under the same loading conditions. Thus, prestressed ...
  • The United Links for the United States Intermodal Workshop
    The United Links for the United States Intermodal Workshop
    United States. Department of Transportation
    1993-07-01 | PDF
    On July 14 - 16, 1993, the United States Department of Transportation and The Port Authority of New York and New Jersey co-sponsored an Intermodal Workshop in New York City. The United Links For The United States workshop was the largest of several intermodal workshops sponsored by the Federal Highway Administration in 1993. The purpose of the work ...
  • Heaves at Transverse Cracks in Asphalt Concrete Pavement
    Heaves at Transverse Cracks in Asphalt Concrete Pavement
    Preber, Terje ;
    Peters, Darla J
    1993-06-30 | PDF
    This report presents the results of the investigation for the cause of heaves at transverse cracks on US Highway 212 between LaPlant and the Missouri River. The investigation included a one-year field monitoring of surface movements at and near transverse cracks at the above project and at five control projects. During this period, soil and asphalt ...
  • Project No B371 Acoustic Emission and Strain Gage Monitoring of WIDOT structure B5158 Tower Drive Tied Arch Green Bay Wisconsin
    Project No. B371: Acoustic Emission and Strain Gage Monitoring of WIDOT structure B-5-158, Tower Drive Tied Arch - Green Bay, Wisconsin
    Prine, David W.
    1993-06-16 | PDF
    The in-depth inspection by WIDOT detected two sites that had visible cracks in the stiffener-to-hanger diaphragm welds, the east side of Hanger 6 in the north tie girder, and the east side of Hanger 4 in the south tie girder. Additionally, many ultrasonic indications were detected by WIDOT in the web-to-stiffener welds. On May 3, 1993 BIRL commence ...
  • Airport Capital Improvement Plan ACIP
    Airport Capital Improvement Plan (ACIP)
    United States. Department of Transportation. Federal Aviation Administration
    1993-06-16 | PDF
    Describes the beginning of Airport Capital Improvement Planning (ACIP), its goals, the national priority calculation, and a copy of the actual order.
  • Market Access Decisions in Regulated and Unregulated Markets
    Market Access Decisions in Regulated and Unregulated Markets
    Wilson, Wesley W. ;
    Beilock, Richard
    1993-06-01 | PDF
    This study examines the effect of regulatory reform in the interstate trucking industry. In our model, carriers travel in round trips and choose to serve different markets corresponding to each leg of the trip. Some carriers have the regulatory authority to haul freight subject to regulation while other carriers do not. Unlike previous studies that ...
  • A Planning Methodology for Intelligent Urban Transportation Systems
    A Planning Methodology for Intelligent Urban Transportation Systems
    Kanafani, Adib ;
    Asad, Khattak
    1993-06-01 | PDF
    The objectives of this research were to explore the current transportation planning process in California, to understand the challenges and opportunities posed by Intelligent Vehicle Highway Systems (IVHS); and to develop a framework for a transportation planning methodology that responds to them. In developing such a methodology, the authors' goal ...
  • Research notes metric is backthis time to stay
    Research notes : metric is back...this time to stay!
    Oregon. Department of Transportation. Materials and Research Section
    1993-06-01 | PDF
    The reasons for metric conversion are simple. The United States is the only industrialized country in the world not metric. Not being able to "speak the metric language" has limited the U.S. competitiveness in what has become a global economy. The metric system itself is easy to use. Other nations, like Great Britain, Canada, and Australia that con ...
  • Latexmodified fiberreinforced concrete bridge deck overlay constructioninterim report
    Latex-modified fiber-reinforced concrete bridge deck overlay : construction/interim report.
    Houser, Elizabeth A. ;
    James, Charles P.
    1993-06-01 | PDF
    Latex-modified concrete (LMC) is Portland cement concrete (PCC) with an admixture of latex. LMC is considered to be nearly impermeable to chlorides and is extensively used to construct bridge deck overlays. Unfortunately, some of these overlays have developed permature cracking and debonding. In an effort to deter these problems, steel fibers have ...
  • The Use of GroundPenetrating Radar in the Surveying of Overlaid Bridge Decks Summary Report
    The Use of Ground-Penetrating Radar in the Surveying of Overlaid Bridge Decks: Summary Report
    Clemeña, Gerardo G.
    1993-06-01 | PDF
    It was shown in a previous study that the presence of delamination in concrete can be detected by the appearance of a distinctive signature in the analog radar reflection profiles recorded when a concrete deck is scanned with ground-penetrating radar. As a follow-up, radar was used on eleven overlaid bridge decks to assess the overall reliability o ...
  • Aviation Accident Risk for Airmen with Aphakia and Artificial Lens Implants
    Aviation Accident Risk for Airmen with Aphakia and Artificial Lens Implants
    Nakagawara, Van B. ;
    Wood, Kathryn J.
    1993-06-01 | PDF
    Airmen with aphakia and intraocular (IOL) implants who on a case-by-case basis, may obtain a waiver for a medical certificate have been previously associated with higher aviation accident rates when compared to the total civil airman population. This study analyzes the accident frequencies of these civil airmen for a 4-year period (1982-95). Medica ...
  • Effect of salt additives on concrete degradation interim report
    Effect of salt additives on concrete degradation : interim report
    Jang, Ji-Wan ;
    Iwasaki, Iwao
    1993-06-01 | PDF
    Many chemical additives designed to inhibit the corrosive effect of salt on rebars are being marketed. Their effect on Portland Cement Concrete is neither known nor understood. This study is an attempt to determine if there is an effect and to understand its nature and results. 82p. (Note: The report has an actual length of 39 pages; in the PDF fil ...
  • Influence of roofing shingles on asphalt concrete mixture properties Final report
    Influence of roofing shingles on asphalt concrete mixture properties. Final report
    Newcomb, D. ;
    Stroup-Gardiner, M.
    1993-06-01 | PDF
    It is estimated that the production of new roofing shingles generates approximately 1,000,000 tons of waste annually in the U.S., and about 36,000 tons of this waste is in the Twin Cities Metro Area of Minnesota. With another 8.5 million tons of waste materials from the rebuilding of shingle or hot-mop roofs each year on a national scale, it seems ...
  • Reducing Heavy Truck Aggressiveness Moving Heavy Truck into a 1993 Honda Civic 3Door Hatchback at 804 KPH
    Reducing Heavy Truck Aggressiveness: Moving Heavy Truck into a 1993 Honda Civic 3-Door Hatchback at 80.4 KPH
    Johnston, S. A.
    1993-06-01 | PDF
    This test report documents a crash test that was conducted for research and development in support of reducing heavy truck aggressiveness. This test was conducted with a 1993 Honda Civic 3-door hatchback, VIN 2HGEH2365PH519207, at Transportation Research Center Inc. on June 14, 1993. The test vehicle was impacted on the front left corner by the hea ...
  • National Review of Statewide Rideshare Programs and Survey of Texas Rideshare Programs
    National Review of Statewide Rideshare Programs and Survey of Texas Rideshare Programs
    Lindquist, Nell Frazer ;
    Turnbull, Katherine F.
    1993-06-01 | PDF
    This study was undertaken to examine the potential for development of a Statewide Rideshare Support Program. This report documents the results of a literature review, telephone surveys with ridesharing agencies in Texas and four other states, and telephone surveys with departments of transportation in fifteen other states. Further, it outlines an i ...
  • Measurement of Transit Benefits
    Measurement of Transit Benefits
    Beimborn, Edward ;
    Horowitz, Alan
    1993-06-01 | PDF
    It is the objective of this report to look at benefits of public transit in a broad way to gain a better understanding of how their measurement can be used to assist in making decisions. The report provides a comprehensive view of the range of consequences of transit services and indicates various methods that can be used to assess their benefits. ...
  • Quality Control and Evaluation of Steel Fiber Reinforced Concrete
    Quality Control and Evaluation of Steel Fiber Reinforced Concrete
    Ramakrishnan, V.
    1993-05-31 | PDF
    This report presents the construction and performance evaluation of steel fiber reinforced concrete (SFRC) pavements constructed in Rapid City, SD, in the summer of 1988 (Haines Avenue) and in the winter of 1990 (Sheridan Lake Road). The primary objective of this evaluation was to compare the performance of SFRC pavement with that of non-reinforced ...
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